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(ModeL) W. D. DOREMUS.

- SASH FASTENER.

No. 247,468. a Patented Sept. 20,1881.

- PETERE. Fswm-mw m. Wasluinglcm n. c.

UNITE STATES PATENT OFFICE.

WILLARD D. DOREMUS, OF WASHINGTON, DISTRICT OF COLUMBIA.

SASH-FASTENER.v

SPECIFICATION forming part of Letters Patent No. 247,468, dated September 20, 1881.

Application filed February 15, 1881. (ModeL) To all whom it may concern Be it known that I, WILLARD D. DOREMUS, of Washington, in the county of Washington and District of Columbia-,have invented a new and useful 1m provementin Window-Fasteners; and I do hereby declare that the following is a -full and exact description of the same, reference being had to the accompanying drawings, and to the letters of reference marked thereon.

My invention relates to certain improvements in devices specially adapted to fastening carwindows, and the object I have in view is to provide a fastener that shall be simple in construction and operation, that shall readily and securelylock thewindowwhenopenedorclosed, and, in addition, afford a neat and simple device Wherebythewindow may be raised or closed as the occasion requires by only continuing the movement of the hand employed in unlocking the fastener. These objects I accomplish by the following mechanism, which I will now describe, having reference to the accompanying drawings, in which-- Figure 1 is a view from the inside of a carwindow with my improved fastener attached Fig. 2, a longitudinal section taken on theline a: w of Fig. 3; Fig. 3, a view, in perspective, of

g the fastener detached; Fig. 4, a view, in detail,

of the finger-piece; and Fig. 5, a view, in detail, of the slotted thimble.

In the drawings, A represents the windowframe, and B the window sash, moving in grooves in said frame. Upon the inside of the lower rail forming the sash, and at or near its center, the wood is cut away to admit a rectangular metal plate, which carries the operative mechanism of my improved fastener. This plate is secured to said rail by screws or other suitable means, (its outer surface being flush with the wood-work surroundingit,) and is slotted at its center by a rectangular opening, 0, through which passes the lower part of a finger-piece, D, presently to be described. This plate may be provided with a lip, 0, extending along its outer lower edge, as shown in Fig. 3, for the purpose ofaiding the operator in working the finger-piece'D when the fastener is applied to heavy-windows but in ordinary cases the form shown in Fig. 1 answers all practical purposes for which the fastener is required. Upon the under surface of this plate, in direct line with the longitudinal center of opening 0, and at each end thereof, are permanently secured brackets or thimbles c 0 c is of ordinary construction, and carries upon its inner face and at right angles thereto a post or bolt, 0 c is in shape a narrow metal ring with its end next the opening 0 cut away, so as to form a V-shaped recess or slot having its inclined sides meeting at or near the center of the ring and lying in planes at right angles to the plate to which said ring is secured.

The lower part of the finger-piece is formed into a hollow cylindrical casing, d, one end of the casing fitting easily over the post c ,while its other end is made V-shaped to correspond with the slot in thimble 0 into which it is intended to fit nicely. The upper part of the finger-piece projects from the plate a sufficient distance to allow its ready manipulation, and is made with fiaring sides, so that the hand of the operator will not easily slip therefrom while employed in raising or closing the window. The slot 0 is of sufficient length and width to permit the proper and necessary movement of the finger-piece to accomplish the desired result.

A bolt, E, of round metal of the proper size and length, passes through thimble 0 into the casing d, at or near the center of which it is securely fastened in any suitable manner. Between the inner end of this bolt and that of the post 0 is placed a coil-spring, e.

A plate, F, having perforations f at certain distances apart, is fastened in one of the-win dow-grooves for receiving the end of bolt E when locking the window,the free end of said bolt moving in a recess cut in the sash, as shown in Fig. 1.

In fitting the fastener to a window the part which the plate, brackets, and bolt occupy should be cut out at the same time, and the recess in which the bolt moves then neatly covered, so that only the plate and finger-piece extending through it will be presented to view.

The operation of my device is as follows: We will suppose the window closed and locked, as shown in Fig. 1, and we desire to unlock and raise it. To accomplish this we press the finger-piece upward with thehand. The first partof this movement turns the casing d in which the bolt is fastened upon its bearings, and the inclines of its V-shaped end pressing against the inclines of the slot in thimble 0 causes said casing to approach the post 0 and withdraw the bolt from the aperture in the locking-plate and release the window. At the moment the bolt is released from the locking-plate the further movement of the finger-piece is checked by its contact with post c" and the upper part of slot 0. The fin ger-piece then is used as a means for raising the window by the continued upward pressure thereon. When the window is raised the proper height the finger-piece is relieved of this upward pressure, and the spring inside the casing 11, compressed by the movement of the finger-piece in unlocking, assumes its normal condition and forces the bolt outward again and locks the window.

To lower the window W. D. DOREMUS.

Witnesses:

MAURICE J. CLAGETT, JOHN G. ScHRoEDER. 

